Hey Lowrez and others, fellow 12ver convert here!
I have a Dean Rhapsody 12ver.
My favourite riff for 12ver is King's X We were born to be loved... Massive
I use it quite a bit in church to fill out things, particularly when we have no guitarist. My personal recommendation is to try the guitar amp/bass amp combination - I use a Peavey BAC-2 biamp bass chorus pedal as a crossover (don't need chorus on a 12ver, it has enough of its own) and send the lows through my Nemesis NC115 combo and the highs through a Boss OD3, vox wah and Ibanez AD99 analog delay (among other things) to my Mesa Subway blues 1x10" guitar combo. It's a pretty huge sound.
Enjoy!
Steve
P.S. This isn't the one from GC Hollywood is it? I played it and it was pretty sweet. And what did it set you back (if you don't mind me asking, and if you do please ignore!)?